/Engine/Source/Runtime/SlateCore/Public/Styling/SlateStyleRegistry.h
Gets the names of every style entry using a brush Note: this function is expensive and is not designed to be used in performance critical situations
Array of style names using the brush
static [TArray](API\Runtime\Core\Containers\TArray)< [FName](API\Runtime\Core\UObject\FName) > GetSylesUsingBrush ( const [FName](API\Runtime\Core\UObject\FName) BrushName )